how to remove url parameters in htaccess

Question

Hi,

I have a codigniter site which does not like added url parameters for example mysite.com/page/value is good but mysite.com/page/value?url=parameters is bad.

Google ads campaigns attach url parameter for tracking, I want to get rid of these for the call to Codeigniter. (I know there are several ways to do it in codeigniter but I want to do it in htaccess level)

My htaccess is :

<IfModule mod_rewrite.c>
    RewriteEngine On

    # This is different between local host and production server!!!
    RewriteBase /


    #Removes access to the system folder by users.
    #Additionally this will allow you to create a System.php controller,
    #previously this would not have been possible.
    #'system' can be replaced if you have renamed your system folder.
    RewriteCond %{REQUEST_URI} ^system.*
    RewriteRule ^(.*)$ /index.php?/$1 [L]

    #Checks to see if the user is attempting to access a valid file,
    #such as an image or css document, if this isn't true it sends the
    #request to index.php
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteRule ^(.*)$ index.php?/$1 [L]
</IfModule>

<IfModule !mod_rewrite.c>
    # If we don't have mod_rewrite installed, all 404's
    # can be sent to index.php, and everything works as normal.
    # Submitted by: ElliotHaughin

    ErrorDocument 404 /index.php
</IfModule>

How should I change it to make it ignore url parameters but still accept mysite/a/b/ urls?

Answer 1

You could test if the query is not empty and stop the rewrite process:

RewriteCond %{QUERY_STRING} !^$
RewriteRule ^ - [L]

Just put this rule before your others and any request with a query does not get beyond this rule.

Answer 2

This should remove any query string:

RewriteCond %{QUERY_STRING} .
RewriteRule (.*) $1?